Photographic flash device for use with a shadowless lamp for surgical operation

摘要

The present invention relates to a photographic flash device used with a common still camera in order to photograph a patient's operation under a shadowless lamp. Specifically, the present invention is characterized in that the flash from a stroboscopic unit positioned with the still camera indirectly actuates a flash device housed in the shadowless lamp, thereby causing substantially simultaneous action of a light-emitter of the flash device. For this purpose, the present invention includes a light receiver, like a photo cell, which functions as a synchronous light- emission switch; a focusing reflector which focuses the flash from the stroboscopic unit positioned with the camera and which is located outside the lamp housing and which illuminates and activates the light receiver; a light shielder which prevents the primary reflection beam from the illuminated field of the shadowless lamp from falling onto the light receiver; a charger connected to a power source and the light receiver; and a light-emitter, like a stroboscopic lamp, which is connected to the charger and which emits light in the same direction as that of the shadowless lamp.